Our multi-purpose vehicle interior retreads contain disodium EDTA, sodium bicarbonate, lanolin. It can have a powerful decontamination function and deep cleaning to give your interior a new look. Helps to form an invisible coating on the surface, protecting the internal surface from fading, cracking and wear. Its application method is very simple: 1. Spray the freshener on the sponge. 2. Wipe the sponge back and forth on the internal surface that needs to be refurbished; 3. Wipe off with a towel. Multi-functional vehicle interior retrefier has chelating function, can remove metal ions and other impurities, improve the repair effect. It won't hurt your hands, and it won't stain or corrode the car's interior.